Home / 80,629.28-120,860.40-58,387.04

Finding the Fourth Proportional to 80,629.28, 120,860.40 and 58,387.04

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Solution

The fourth proportional to 80,629.28, 120,860.40 and 58,387.04 is: 87,520.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,629.28 : 120,860.40 = 58,387.04 : x
  2. Step 2: Convert to fraction form
    80,629.28/120,860.40 = 58,387.04/x
  3. Step 3: Cross multiply
    80,629.28x = 120,860.40 × 58,387.04
  4. Step 4: Simplify right side
    80,629.28x = 7,056,681,009.22
  5. Step 5: Solve for x
    x = 7,056,681,009.22/80,629.28
  6. Step 6: Final answer
    x = 87,520.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.